Updating preconditioners for permuted non-symmetric linear systems

We consider the solution of a sequence of nonsymmetric linear systems arising from a supersonic model problem by exploiting triangular preconditioner updates. In addition, we demonstrate how the power of the updates can be enhanced by permuting the entire sequence beforehand with a physically motiva...

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Veröffentlicht in:	PAMM 2007-12, Vol.7 (1), p.1022101-1022102
Hauptverfasser:	Birken, Philipp, Tebbens, Jurjen Duintjer, Meister, Andreas, Tuma, Miroslav
Format:	Artikel
Sprache:	eng
Schlagworte:	Euler equations,Preconditioning
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	We consider the solution of a sequence of nonsymmetric linear systems arising from a supersonic model problem by exploiting triangular preconditioner updates. In addition, we demonstrate how the power of the updates can be enhanced by permuting the entire sequence beforehand with a physically motivated reordering of unknowns. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:	1617-7061 1617-7061
DOI:	10.1002/pamm.200700554